Type-writing machine.



R. W. UHLIG.

TYPE WRITING MACHINE.

APPLICATION rum) SEPT. 18, 1909.

1 1 1 4, 3 1 6', Patented Oct. .20, 1914.

3 SHEETSBHEET 1.

WITNESSES: INVENTQB; I WWLVL Y ATTQBN R. W. UHLIG,

TYPE WRITING MACHINE.

APPLICATION FILED SEPT. 18, 1909.

1,114,316, Patented 00t.20,1914.

3 SHEETSSHEET 2.

WITNESSES: INYENTQH; fiA m WW4;

BY f m R. W. UHLIG.

TYPE WRITING MACHINE.

APPLICATION FILED SEPT. 1 .8, 1909.

1 1 1 4,3 1 6. Patented 001;. 20, 1914.

3 SHEETfi-SHEET 3.

9 Wii'n eases, 4

-, un-man srAtrEs PATENT curios.

RICHARD w. UHLIG, or RUTHERFORD, NEW JERSEY, Assrelvon'ro UnnmtwoonTYPE-- I WRITER COMPANY, OF NEW YO'B-K, N.

Y., A CORPORATIGN OF JERSEY.

TYPE-WRITING MACHINE.

' Application filed September To all whom, it may concern Be it knownthat I, RICHARD V. UHLIG, a citizen of the United States, residing inRutherford, in" the county of Bergen and State of New Jersey, haveinvented certain new anduseful Improvements in Type Writing Machines, ofwhich the following is a specification. This invention is. animprovement in line-- spacing mechanisms for typewriters. The usual pawland ratchet line-spacing mechanism for typewriting machines enables theoperator to space his lines apart a set or fixed minimum distance ormultiples of that the operator desires to e distance--that is, to theusual regular extent. It frequently ha pens however that ect a finealteration in the spacing of the typewritten lines in which event hemust space the sheet by hand, depending upon his eye alone. j

The prmcipal object of my invention is to render it convenient in amachine having any line-spacing mechanism, for the operator to obtainminute regulation-that is, regulation complete, within extremes ofadjustmentof the line-spacing when desired,

' as in feeding ruled sheets through the machine; whereby he is enabledeither to space the typewritten lines at the intervals usual intypewriting machines, or to obtain variations and fine regulation ofsuch intervals. To this} end I have combined, with the main spacingmechanism such as a pawl-and ratchet mechanism of the ordinary type, anauxiliary line-spacing mechanism, each mechanism being provided with anadjustment which in one case enables the operator to vary theline-spacing by unitary amounts or intervals in the usual manner, and inthe other case, enables the operator to maintain any desired intervalbetween the lines.

I provide, in addition to the usual unitary predetermined regularline-spacing mechanism, an auxiliary spacing mechanism including asupplementary clutch wheel for effecting fine variations in theline-space in terval, and a dog to rotate the clutch wheel, andadjustment being provided to control the throw of the dog. Either of thelinespacing devices may be operated at will, by means of a singleline-spacing lever-of the usual type. A tooth operated by said lever isshiftably mounted so as to'operate'either will.

Specification of Letters Patent.

18,1909. *seriai No. 518,428.

Patented Oct. 13, 1914;.

Toshift the tooth to position to operate the clutching mechanisnu-Iprovide a switch actuated by lever, which also releases or withdraws theusual spring-pressed detent fromsaid ratchet wheel.

a In the accompanying drawings, Figure l is a perspective viewillustrating'one enibodnnent of my invention applied to the Underwoodtype of frontstrik'e writing niachnies, and showing the parts inposition to actuate theregular or main line-spacing mechanism. Fig. 2 isa similar viewfshon mg the tooth in operative engagement with theirregular-or auxiliary line-spacing mechanlsm. Fig. 3 is a perspectiveview like Fig. 2, with the clutch member removed. ,Fig. 4. 1s side view,showing the tooth at'rest in POSltlOII to operate the auxiliaryline-spacin g -n1ecl 1anism, the positions assumed bv the clutching dogand transmission lever when at rest also being shown. Fig. 5 is a topplanview of the parts in the-positions shown in Fig.4. Fig. 6 is afragmentary top plan view, showing the tooth in position to on gage theregular line-spacing mechanism. Big. 7 1s a detail perspective view ofthe switch, its lever and the detent-releasing arm.' Figs. 8, 9 and 10aredetail rear side views showing, respectively, the inactiic positionsof the clutching dog and transmission lever on the carrier, thepositions astransmission lever, and the 'positions assumed by thecarrier, clutching dog and transmission lever while the variablelinespacing mechanism is being operated. 'Fig. 11 is a perspective viewshowing the conforclutching dog. Figs. 12, 13 and 14 are diagrammaticviews illustrating the. positions assumed by the pawl when at rest, whenfirst engaging the ratchet, and-when at, the end of its line+spaeingstroke respectively. Fig. 15 is a detail view-of the stop for the clutchand its adjusting mechanism. Figs. 16 and 17 are'views illustratingrespectively the position occupied by the pawl when about to operate theclutch mechanism, and the position of the pawl when operating suchmechanism. Fig. 18 is a detail view of the detent and its releasingmechanism.

A indicates a platen having an axle 1, jourua'led in the ends of aplaten .frame 2, of the Underwood style of front strike writing machine.

sumed when the tooth first engages the mation 'of the transmission leverand the,

. turning-spring 7. A

A mechanism.

lever 13 is controlled by an ad ust1ng plate.

' lever,

- justed position.

- *ated by the shoulder 12, in Fig. 12, and

A line-spacing ratchet wheel 3, fast on the axle 1, is engaged by theusual spring-actuated detent 4:, and as usual has invariableline-spacing teeth.

A slide 5 is mounted in the end of the platen frame, and is driven bythe linespacing leicr '6,'against the tension of a re 8, having a spring8?, is pivoted to the slide and is provided with a tooth 10 for rotatingthe ratchet wheel and platen. The pawl device 8 may carry a rearwardlyextending beak 9 adapted to engage an ad ustable shoulder 12 controlledby a regulating 'lever13 constituting a line-space adjusting The throwof the regulating 36, one end of which i -connected. to the the oppositeend being slotted to receive a guiding platen frame. The adjusting plateis capableonly of a limited number of ad ustients, hav-ing'for thispurpose a series of apertures 38 rcleasably engaged by a spring detent'39 to hold the regulating lever in ad- Thebeak may beheld eletherefore,holds the tooth 10 up in'idle position through more or less of theline-spacing stroke, whereby the ratchet and platen may be turned one,

two or three regular or mpawl device or driverstud 37, mounted on thevariable steps as usualthat is, it may beturned through intervals of afixed minimum (the, distance between two successive tcethl or multiplesof said minimum.

The minutely variable line-spacing mechanism comprises an annular flangeor ring 14 rotating with the platen and. conveniently carried by theratchet wheel 3, this flange clutch member comprises a constitutingaclutch element of a frictional line-spacing mechanism. A cooperatingcarrier 15 rotatable around the ,axle 1 and having a clutching. dog 16mounted to vibrate on the carrier, ,as'by means of a pivot pin 16 inalincment with the flange 14, the dog having a pair of jaws 17 to bite uon theflangeli, An interponent or transmission lever 20 is pivotallymounted upon the carrier in such manner as to engage the outer end of,the

I held against "the return stop by a returnspring-26 connected to andacting through the carrier 15. A permanent stop 27 arrests engaging ahead 24 connected by the clutching dog to terminate the linejustablestops.

lever '6 can then space stroke, and the throw of the clutching dog andhence, of the platen, is determine by thedistance betweenthe fixed andad- Either the regular or the minutely vari-' able line-spacingmechanism may be operated by the lever 6, and as one means to ellectthis result, I preferably form the pawldevice of two members comprisingthe body portion 8 and the tooth. 10, which latter is a'djustablysecured to the body portion for lateral shifting movement. When thefinely variable clutching line-spacing mechanism is to be operated, thepawl is shifted out of operative relation with the ratchet wheel 3 by aswitch 28, operated by-a'handle'29 pivoted on the axle. I

The free end of the switch-is beveled at 28 so that when the lever 29 isthr6wn'for-. wardly, such beveled edge, or cam will engagethe free endof the tooth 10 to shift orforce the same laterally out of operativeposition with the ratchet-and against the tension ofa spring 11.-- y AWith the shiftingbf the tooth 1O 'outlo'f operative relation with theratchet, the line-- spacing clutch mechanism becomes 0 erative'.-Conveniently, when the tooth is s ifted out of operative positionrelative to the ratchet, it is shifted into operative relation with theline-spacing clutch. mechanism, as shown in Figs. clutching dog andplaten. The line-spacing slide and pawl device rearw'ardly, the free endof-the tooth 10 engaging the 'transmis: sion lever 20, to cause the sameto rock the clutching dog to bite on the flange 14, as shown in- Fig. 9.Continued travel of. the tooth 10 will throwsion lever and clutchingtion shown in Figs. 10 flange and platen until the clutching dogcontacts with the permanent stop 27.- The tooth 1O rides along the edgeof the switch 28 during the spacing-operation, as shown inFig. 17.

Upon the release of the lever 6, the slide 5 dog into the posi- 8 and16',to actuate the be operated to drive the the carrier, transmis 3105and 17 to rotate the and pawl device are returned by spring 7 to theirpositions of rest, togallow the spring 26 to return the carrier 15',clutching dog 16 and lever 20 to their normal inactive .positions.

j It will beunderstood that during the ordis nary line-spacingoperation, the pawl 8 and w tooth 10 do not travel straight backward,but dip down until the tooth ratchet wheel 3,.and then take-acurvilinear course controlled by the movement ofthe' ratchet wheelitself, asseen in Figs. 13 and engages the This means consistsof'theswitch 28 itself,-

.th'e controlyof thedtentjvhen thefswitch has shifted the toothoutr'ofoperativelrelation with the ratchet; as shown in Fig. 16.

A forwardly projecting finger-"'35 on *the slide may, if desired,engage'tlie'rear-facev 1 of the clutchingl dogon the rttirnbfthe slideto normal position, to aid in rocking the dog todisengage its 'jaws 17from the flange, 14, although this finger may be omitted insome'cases. p

v The switch 28 "may conveniently have an additional function, "namely,-to lock the with oneto eng agemef platen A against overthrow when it isline spaced in theusualmannen'by meansioi the ratchet 3 andipawl.devicef Saidjswitch' is beveled on .itsffroiit under surface tooverhang the tooth-1 0 of the pawl and arrest the same, its-shape'beingsuch that the .pawl cannot rise when" it 'is in'engagement'with\said'overhanging art, as in Fig. 18. 1' It 'will' be seen t "at myinvention provides for the. application of both kinds'oflinespacingmechanism to the same machine. wvariations maybe resortedto within thescope of the invention, and portions of the,

improvements may be used without others.

. Having thus described my invention, I

claim v I it. In a typewriting machine, the combination with a platen, 0means for line-spacing by intervals of-a fixed minimum and multiples ofsaid minimum, line-spacing means, minutely adjustable, a deviceshiftable into the train oieither of said line-spacing.

means,.-means :whereby said. device-may be shifted, anda leveradapted tomove said said device of eitherof the means aforesald.

;-- ;2. Ina typewriting machine, in combina: ti'oima" platen, meansfor'efiectin'g line spam ing by intervals of; usual regular extent, in-

cluding a .shiftable device, means operable by said shiftabledevic'e'ior line spacing said platen by intervals variable by irregularextents, 'an .a'ctuating lever, and means to shift said shiftabledevice.

' 4. In a line spacing-"mechanism, a platen,

3. In a typewriting machine, the combina tion with a' platen, of ratchetfeeding and frictional feding line spacing devices for line-spacing'byunitar'ily or minutely variable line-spacing intervals, and"a lever-operated line-spacing actuator adapted to op.-

erate either line-spacing mechanism,

a lineespacingwheel on said-platen, a pawl for said wheel, aclutch-membercarried by said. wheel, a second clutch-member adapted to--.;;ooperate -with said first-mentioned cliitch memher, andgmeans for:pawl into position H o .engage tioned-clut-ch-membei 5. Inatypewriti'ngmac ,5, tion with a'ipla'ten, ofgmeans in'g said. -platen by: intervalsofi-u sual regular- ""ektent, j a minntelyfiyariable line-spacing meansa lever-operated.actuator; for. fi'e cti i the operation on other thline-spacing '-means,'. a switch where I Actuator may be .made .;tovopera either-of the respective line-spacing means, a1'1ddevices foradjustin theeimnt of-"allthe line;

spacing strokes ectedlby'said -actuator.- 6. In a typewriting'machine,the combina tion with a platen, of a frictional line-"spac ing device, aratchet line'spacing device, in

. eluding. a shiftable, actuator, andflaf'switch r for shifting theactua't the line-spacing dev 7. In a typewri-tin 'ach gins a s tion witha platen, minutely variable line-spacing devices, including ashiftableactuator, a switch for 'throwing a the actuatorfronti posit n 'tooperate oneof the line-spacing. devices to position to 6p;

erat'e the other, a 'det'eiit of the line spacing devices, and 1aidetent releasefcom trolled-fby the movement'offithe switch. 1'

able actuator for operating the ratchet 1 or the clutchemem-berrespectively, a .detent for;

the ratchet, a co ntnoiling lever havinga switch and ,a detent -release,to shift the actuator'into position-to. operate the clutch member, andto simultaneously disengage the detent from the ratchet. i i

10. "In a typewritm fmachine,the combie nation with a platen, I of aline-spacing mechanism, including aratchet wheel, and a minutelyvariable line-s acing'de'vice includ ingW-mlutch 'element,- t wheel andclutch element connected with the platen, a swinging clutching doghaving'ja'ws tobite upon the clutch element, a shiftablelever-actu- 1ated itooth adapted to actuate the f ratchet heat-or the clutching dogrespectively, and mean. for .'.shifting the tooth .to' eflz'ect theperatian of the wheel) (if the clutch element.

11; In a typewriting'ma'chine, the combi- ,nation with a platen, of aline-spacin ,mech'anism, -ineluding a ratchet connecte with theplaten,'a deteni; ,for the ratchet, and 3 '8. Inla type'writjing in'aribeftjh eas g...

shiftable- .member M for operating the.

ratchet, a frictional mechanism comprising a clutchelement. connectedwith the ratchet,

a. swinging-clutching dog having jaws to bite upon and rotate theclutchelement, a lever-having an arm to engage the detent, and a switch toshift the ratchet-operating member into position to operate saidclutching dog and for releasing the detent from;

the ratchet simultaneously with the said shifting; of theratchet-operating member by the switch. T

. 12'. In a typewriting machine, the combination .with a platen, of aline-spacing.

mechanism, including a ratchet and a clutch element connected with theplaten,ia co6per ating clutch member'capable of independentrotationrelatively to the platen, a shiftable lever-actuated member to on agethe ratchet orthe clutch member to eecteither uni-.

. tarily or minutely variable line-spacing, and a switch for shiftingthe shiftable member.

13. In a typewritingmachine, the combination with a -platen, of'aratchet and ,a clutch element con'nected'with the platen,-;acooperating clutch element, a ,shiftable member for actuating theratchet orthe said cooperating element, a spring yieldingly' retainingthe cooperating clutch element -in released position, and a switchfor-shifting the shiftable member into position to operate saidcooperating clutch element.

14. In a typewriting machine the combination with -a laten, of aline-spacing mechanism inclu ing a clutch element connected with theplaten, a, clutching dog having a normally disengaged jaw to bite uponthe clutch element, a lever-operated actu 'a tor for causing the.engagement of the "clutching dog and-clutch element, to rotate clutchingdog to aid in disengaging the latter'and clutch element subsequently 'tothe advance of the platen.

15. In a typewriting machine, the combination with a platen, of aline-spacing mechanism including a clutch element con nected with theplaten, a clutching dog having a normally disengaged jaw to bite' uponthe clutch element, an actuator for causing the engagement of theclutching dog .an

' clutch element, to rotate the latter together with the"- laten, apivotally-supported lever in'terpo and engaged by the actuator, a springfor returning the clutching dog and interposed lever-to inactiveposition, and astop to al"- f device;aminutelyivariable-line-spacing derest the interposed lever.

between the-actuator and dogs esa 16. In a typewriting machine, thecombination with a platen, of a line-spacing -mechanism inclu ingaiclutch element conclutching dog, a lever between the actuatorclutching dog is normally held.

17. I-n' a typewriting machine, th e combiline-spacing. device. for theplaten, a linespacing device whose throw is variable by predefinedunits, a shiftable actuator for effecting the advance of thepla'tenthrough either of the line-spacing devices, a spring "for maintainingthe? actuator in operative position, relatively to the last namedlines'pacing device, and means for shifting the actuator to operativeposition-relatively to the other line-spacing device.

.na ion with a platen, of a line-spacing mechanism including a ratchetconnected to the. platen, a shiftablelever-operated tooth {or drivingthe ratchet,- and a combined with: the platen, a lever-operated slide, apawl .deviee mounted thereon, a line-space. regulator-controlling theoperation of the pawl, apawl' shiftably mounted on said pawl in.position to engage the ratchet, a clutch device also adapted to rotatethe platen, and a switch adapted to shift the ratchet, against thetension. ofthe spring, and' into -;.operat1ve engagement with theclutch. device.

21.. In "a; typewriting machine, the combivice on -said slide, mpawladapted to engage the i'atcheti'shiftably mounted onsaid pawl .nectedwith the platen, a clutching dog havingta normall disengaged jaw tobiteuponthe clutch 'e ement', an actuator for the nation with a platen, .ofa finely variable.

switch and stop for-shifting the-tooth out of.

and dog, and a stop against "which the nation-"with a' 'platen,ofaline-spacing .19.. In a typewriting machine, the combination with aplaten, of a ratchet connected pawl device, a springyieldingly holdingthe pawl out-of operative engagement with the nation with aplaten, of'aratchet connected thereto, a lever-operated shde, a pawl denation with aplaten and a usual line-spacmay be shifted fromenga ratchet to engagingrelation .vicefand a switch whereby the said pawl a; relation to thenutely variable line-spacing. device.

nation with a platen, ofa finely variable line-spacing device aline-spacing device whose throw 1s varlablef b'y mtervals'jof a fixedminimum and multiples thereof, a lever-operated slide, a. member pivotedon the slide, a pawl shiftably mounted on the piv o'ted'member, a springmaintaining the pawl in operative relation with the last mentioned ofsaid line-spacing devices, and a switch for shifting the pawlagainst'the tension of its spring-into position-for operating" the otherof said line-spacing devices,

" 23, In a typewriting machine, the combination with a platen and ausual line-spacmg devlce connected thereto, vof a minutely variableline-spacing device also connected to the platen, ashiftable pawlnormally in.

position to engage said usual line-spacing dev ce, means for shlftingsald pawl'from its normal position into a position where it is adaptedto "engage the minutely variable line-spacing deviceQanda lever adaptedto move the said pawl-when in either position,

to turn the platen. 24. In a typewriting machine, the combimg deviceconnected thereto, of a minutely Variable line-spacing device alsoconnected to the platen, a pawl for engaging either of said line-spacingdevices, means whereby said pawl may .be placed into position to engageeither of said line-spacing devices, and a means for moving the pawlwhen in either position, to turnethe platen.

In a typewriting machine, the combi-- single operating lever beingcommon to both of said line-spacing devices.

:7. In a tfvpewriting machine, the combination witha platen,aline-spacing mechanisnr therefor including a device whose throw isvariable by intervals of a fixed switch for shitting the tooth out ofoperaminimum andmultiples thereof, and a reguialor forsaid line-spacingmechanism, of a minutely variable line-spacing mechanism, a regulatorfor the latter, and a lever for with the 'mi-- Ina typewriting' machine,the coinbi operating wilt; I 1 '28. In a typewriting machine, thecombination with a platen, a line-spacing mechanism' therefor includinga device whose throw is variable by intervals of a fixed minimum andmultiples thereof, and a regulator for said line-spacing mechanism, of aminutely variable line-spacing mechanism, a regulator for the latter, alever, and means for enabling the lever to operate either linespacingmechanism at will.

29. In a typewriting machine, the combieither line-spacing mechanism atnation with a platen, a line-spacing mechanism connected therewithincluding a device whose throw is variable by intervals of a fixedminimum and multiples thereof, and aleveroperated actuator, of anormally silenced finely variable line-spacing mechanism also connectedwith the platen, and a switch for throwing the actuator out of operativerelation with the unitari-ly va 'iable line-spacing mechanism andrendering the other aecave.

30. Ina typewriting machine, the combination with a platen, of aline-spacing mechanism including a device whose throw is variable byintervals of a fixed minimum and multiples thereof, a minutely variableline-spacing mechanism, both of said mechanisms connected with theplaten, alinespacing lever, a shiftableytooth driven by the lever, andmeans for throwing the tooth out of operative relation to the unitarilyvariable line-spacing mechanism and'into operation with the other.

'31. In a typewriting machine, the combination with a platen, of aline-spacing device whose throw is variable by intervals of a fixedminimum and multiples thereof, a finely variable line-spacing device, ashii'table actuator for effecting the advance of the platen through theunitarily variable line-spacing device, means for shifting the actuatorfrom position to cooperate with one line-spacing. device into positionto cooper- I ate with the other; the unitarily variable device includinga ratchet and a detent: and

means for disengaging the detent from the unitarily variableline-spacing device when the actuator is thrown intoposition to op-verate the finely variable line-spacing device.

32. In a tvpewriting machine,the combination with a platen, ofaline-spacing device whose throwis variable b v intervals of a fixedminimum and multiplesthereof, a finely variable line-spacing deidce, alever, a shiftable tooth interposed between one of theline-spacingdevices and the lever, a spring for maintaining thetooth 1noperativo relation to its line-space device, and a tire positionrelatively to its line-spacing device when the .reman'nng line-spacedevice is to be operated.

ed with the platen, a lever-operated slide,

a pawl device pivotally' mounted thereon, a

' line-space regulator controlling the pawl device, said pawl devicehaving its teeth pivotally mounted thereon, a spring engaging the toothto yieldingly retain it in operative position relatively to the ratchet,a finely \"ariable line-spacing mechanism normally silenced, and aswitch for shifting the tooth out of operative position relatively tothe ratchet, and rendering said finely variable mechanism effective.

34. In a typewriting machine, the combination with a platen, of aratchet connected thereto, a spacing lever, a pawl device operated bythe spacing lever having its tooth shiftably mounted thereon, to engagethe ratchet, a switch for throwing the tooth out of position operativelyto engage the ratchet, a rest on the pawl device for riding on theswitch to retain the tooth out of engagement with the. ratchet, and afinely variable linespace device adapted to be engaged by the tooth tobe operated by the spacing lever.

35. In a typewriting machine, thecombination with a platen, of aline-space mechanism having a toothed wheel for turning said platen tothe extent, of aliquot tooth I spaces insaid wheel, a variable elementlinespacing said platen, an actuator for effecting the advance of-theplaten through one or the other of said line-spacing means, a switch forshifting the actuator, a detent for the toothed wheel, and means fordisengaging the detent when the actuator is thrown into position.- tooperate the minutely'variable line-spacing means.

36. The combination with a platen and a manually operable reciprocatorymember, of

a line-spacing device including a member whose throw is variable byunits of usual regular extent, and a line-spacing device including amember whose throw is finely variable. each of suchdevices operable bysaid reeiprocatory member.

37. The combination with a platen and a manually operable member, of aline-spac- .ing device lncluding a member whose throw is variable byunits of usual regular extent,-

a finely variable line-spacing device, and means for rendering either ofsaid line-spacing devices operable bysaid manually operable member andthe other of said line-spacing devices concomitantly inoperable by saidmanually operable member.

.38. The combination with a platen and a manually operable lever, of aunitarily variable line-spacing deviceincluding a ratchet and a detenttherefor, said ratchet connected spacing devices concomitantly renderingthe other of sai line-spacing devices operative. In a typewritingmachine, the con bination with 'a platen to' be line-spaced, o aline-spacing device including a membe whose throw is variable bypredefined unit: a finely variable line-spacing device, shift able meansfor rendering inefi'ective at wil either of said line-spacing devicesand con comitantly rendering the other of said line operative, and means1501 holding said shiftable means in either posi tion to which it may beshifted.

41. In a typewriting machine, the combination with a platen to beline-spaced, oi a line-spacing device including a member whose throw isvariable by predefined units, a finely variable line-spacing device, are,- ciprocatory pawl or driver capable of operating either of saidline-spacin devices, and means for shifting. said reciprocatory driverfrom one line-spacing device to the other at will.

42.-In a typewriting machine, the combination with a platen to beline-spaced, of

a line-spacing device including a member.

whose throw is variable by predefined units, a finely variableline-spacing device, a reciprocatory pawl or driver capable ofoperatingeither of said line-spacing devices, a device for shifting saidreciprocatory driver from one line-spacing device to the other andholding it there, and means to return said driver.

-13. The combination with a typewriting machine having a. platen andratchet, of a minutely variable line-spacing device, a pawl normallyadapted to operate said ratchet and shiftable to operate said mi-'nutely variable line-spacing device, means I for shifting said pawl, andmeans for actuating said pawl when in either normal or shifted position.I

RICHARD W. UHLIG. Witnesses: I

JOHN O. SEIFERT, K. FRANKFOBT.

